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glibc/dlfcn/failtest.c
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#include <dlfcn.h> | |
#include <stdio.h> | |
/* Number of rounds we perform the test. */ | |
#define TEST_ROUNDS 10 | |
static const char unknown[] = "a-file-with-this-name-does-not-exist"; | |
static const char exists[] = "failtestmod.so"; | |
int | |
main (void) | |
{ | |
int i; | |
setvbuf (stdout, NULL, _IONBF, 0); | |
for (i = 0; i < TEST_ROUNDS; ++i) | |
{ | |
void *dsc; | |
printf ("Round %d: Try loading \"%s\"\n", i, unknown); | |
dsc = dlopen (unknown, RTLD_NOW); | |
if (dsc != NULL) | |
{ | |
printf ("We found a file of name \"%s\": this should not happen\n", | |
unknown); | |
return 1; | |
} | |
printf ("Round %d: loading \"%s\" failed\n", i, unknown); | |
/* Don't use `dlerror', just load an existing file. */ | |
dsc = dlopen (exists, RTLD_NOW); | |
if (dsc == NULL) | |
{ | |
printf ("Could not load \"%s\": %s\n", exists, dlerror ()); | |
return 1; | |
} | |
printf ("Round %d: Loaded \"%s\"\n", i, exists); | |
dlclose (dsc); | |
printf ("Round %d: Unloaded \"%s\"\n", i, exists); | |
} | |
return 0; | |
} | |
extern void foo (void); | |
void | |
foo (void) | |
{ | |
} |